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ASTM B338 Gr.1 Titanium Seamless Tube

TTSMT01 - ASTM B338 Gr.1 Titanium Seamless Tube

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ASTM B338 Gr.1 Titanium Seamless Tube

Grade	GR.1/UNS R50250、GR.2/UNS R50400、Gr.5/UNS R56400、Gr.7/UNS R52400、GR.9/UNS R56320...
Standard	ASTM B338 / ASME SB-338
Type	seamless tube
Manufacturing Process	Cold-rolled / Cold-drawn / Annealed / Pickled
OD	3.18-38mm (1/8''-1 1/2'')
WT	0.5-3mm (0.02''-0.118'')
Length	Customizable to meet your needs
Surface	Annealed and pickled surface
Inspection	PMI, dimensional inspection, visual inspection, mechanical property testing, hardness testing, UT, ET
Certificates	ISO/PED

What is GR.1?

Grade 1 is classified as industrial-grade pure titanium; among pure titanium grades, it offers the lowest strength but the best plasticity and ductility. Its most notable feature is its excellent corrosion resistance, maintaining stable performance in seawater, chloride environments, oxidizing media, and various chemical media. As a result, it is highly suitable for heat exchangers, condensers, desalination systems, and chemical processing equipment. At the same time, Gr.1 offers good cold working, forming, and welding properties, making it easy to process into thin-walled tubes and products with high surface finish requirements. For ASTM B338 Gr.1 Titanium Seamless Tube, this material combines lightweight properties, corrosion resistance, and processability, making it particularly suitable for applications requiring high long-term service stability.

Titanium Chemical Composition
	Fe max	C max	N max	H max	O max	Al max	V max	Pd max
GR.1/3.7025	0.2	0.08	0.03	0.015	0.18
GR.2/3.7035	0.3	0.08	0.03	0.015	0.25
GR.5/3.7165	0.4	0.08	0.05	0.015	0.2	5.5-6.75	3.5-4.5
GR.7/3.7235	0.3	0.08	0.03	0.015	0.25			0.12-0.25
GR.9/3.7195	0.25	0.08	0.03	0.015	0.15	2.5-3.5	2-3

GR.1 Mechanical Properties
	Tensile Strength Mpa	Yield Strength Mpa	Elongation After Fracture %	Reduction of Area %	Hardness HBW	Impact Energy Absorption J
Bar	290~410	≥180	≥30(long.)；≥25(tr.)	≥35	≈120	83(long.)；62(tr.)
Strip, Plate	290~410	≥180	≥24(A50)；≥30(A5)	/	≈120	≥62

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What industries use titanium tubes?

Gr.1 Titanium Seamless Tube offers excellent corrosion resistance, good ductility, and stable machinability. Due to the seamless manufacturing process, the tube exhibits superior structural integrity and uniform microstructure, effectively reducing the risk of leaks caused by welds. It delivers enhanced reliability under pressure, in corrosive environments, and during long-term continuous operation. Gr.1 pure titanium is strictly controlled for impurities such as oxygen and iron, offering excellent cold formability and weldability. It is particularly suitable for manufacturing heat exchanger tubes that require thin walls, high purity, and high surface finish standards.

In terms of applications, Gr.1 Titanium Seamless Tubes are widely used in heat exchangers, condensers, evaporators, seawater desalination equipment, chemical fluid transport systems, marine engineering, environmental protection equipment, and cooling systems in the power industry. For applications involving chloride-containing media, seawater environments, and oxidative chemical media, this product effectively balances corrosion resistance, service life, and weight reduction requirements, offering significant advantages in industrial scenarios where high reliability and long-term stability are essential.

How does MTSCO conduct quality control?

1. Secondary Inspection of Raw Materials

Material Test Certificates (MTCs) and Material Proving Certificates (PMCs) are required for every batch of raw materials. Upon arrival at the factory, the materials undergo secondary inspections, including PMC verification, to ensure that the material grade, furnace number, and basic properties comply with order specifications and industry standards.

2. Traceable Production Process Management

Throughout the production process, each stage is supervised by experienced engineers, technicians, and QC personnel. Process transfer cards are used at every stage, and photographic records are maintained to ensure transparency in the production process, data traceability, and accountability.

3. 100% Pre-Shipment Inspection

Before finished products are shipped, the QC team conducts routine inspections of appearance, PMI, dimensions, and quantity. Additionally, based on requirements, tests such as mechanical properties, hardness, UT, ET, and HT are performed. We also support third-party inspections by SGS, TÜV, and BV to further guarantee delivery quality.

4. Issue Tracking and Quality Closure

In addition to factory-level inspections, MTSCO maintains an on-site QC team that monitors production progress in real time and retains QC images for traceability. Should any quality issues arise, the 8D mechanism is initiated to trace causes, implement corrective actions, and ensure closure.

FAQ for Gr.1 Titanium Seamless Tube

1. For which applications is Grade 1 seamless titanium tubing suitable?

Grade 1 is industrial-grade pure titanium, making it particularly suitable for use in seawater, chloride-containing media, oxidizing media, and various chemical environments. As a result, this type of seamless titanium tubing is widely used in heat exchangers, condensers, evaporators, seawater desalination equipment, chemical fluid transport systems, and marine engineering projects.

2. Why is ASTM B338 Grade 1 Titanium Seamless Tube commonly used in heat exchangers and condensers?

Grade 1 titanium not only offers excellent corrosion resistance but also possesses good thermal conductivity, ductility, and machinability, making it suitable for fabricating thin-walled, high-purity tubular products. In heat exchange equipment, it effectively withstands environments involving seawater, cooling water, and certain corrosive media, while reducing maintenance frequency and extending equipment service life.

3. Can dimensions, lengths, and surface finishes be customized according to project requirements?

Yes. In actual supply, we generally provide customized solutions based on project needs, including various dimensional ranges, fixed-length cuts, and annealed and pickled surfaces.

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